package club.hicode.daydayup.file;

import cn.hutool.core.io.FileUtil;
import cn.hutool.core.io.watch.WatchMonitor;
import cn.hutool.core.io.watch.Watcher;
import cn.hutool.core.lang.Console;
import cn.hutool.core.thread.ThreadUtil;
import org.junit.Test;

import java.io.File;
import java.nio.file.Path;
import java.nio.file.WatchEvent;
import java.util.concurrent.TimeUnit;

/**
 * 文件监听器
 *
 * @author Liu Chunfu
 * @date 2018-07-03 下午5:27
 **/
public class FileListener {

    @Test
    public void listen1() {
        File file = FileUtil.file("/Users/liuchunfu/Develop/temp");
        //这里只监听文件或目录的修改事件
        WatchMonitor watchMonitor = WatchMonitor.create(file, WatchMonitor.ENTRY_MODIFY);
        watchMonitor.setWatcher(new Watcher() {
            @Override
            public void onCreate(WatchEvent<?> event, Path currentPath) {
                Object obj = event.context();
                Console.log("创建：{}-> {}", currentPath, obj);
            }

            @Override
            public void onModify(WatchEvent<?> event, Path currentPath) {
                Object obj = event.context();
                Console.log("修改：{}-> {}", currentPath, obj);
            }

            @Override
            public void onDelete(WatchEvent<?> event, Path currentPath) {
                Object obj = event.context();
                Console.log("删除：{}-> {}", currentPath, obj);
            }

            @Override
            public void onOverflow(WatchEvent<?> event, Path currentPath) {
                Object obj = event.context();
                Console.log("Overflow：{}-> {}", currentPath, obj);
            }
        });

        //设置监听目录的最大深入，目录层级大于制定层级的变更将不被监听，默认只监听当前层级目录
        watchMonitor.setMaxDepth(3);
        //启动监听
        watchMonitor.start();

        ThreadUtil.sleep(5, TimeUnit.MINUTES);
    }
}
